package Thread2;

class Counter {
    private int count = 0;

    synchronized public void add(){
        count++;
    }

    public int getCount(){
        return count;
    }

    public synchronized static void func(){
        synchronized (Counter.class){

        }
    }
}

public class Demo17 {
    public static void main(String[] args) throws InterruptedException {
        StringBuffer stringBuffer;
        Counter counter = new Counter();
        Thread t1 = new Thread(()->{
            for(int i = 0; i < 50000; i++){
                counter.add();
            }
        });

        Thread t2 = new Thread(()->{
            for(int i = 0; i < 50000; i++){
                counter.add();
            }
        });

        t1.start();
        t2.start();

        t1.join();
        t2.join();

        System.out.println("count = " + counter.getCount());
    }
}
